I don't think it is billions. Perhaps $100m plus not sure whether this is after taking into consideration what OBS's private group had to stuff out. On balance I think this F1 gig may not be such a bad event for S'pore afterall, because you gotta look at the big picture branding image etc.
But throwing billions in what may only return tens of millions is a bad investment decision. And plus its only for a few days. What benefit is that?
After all, Malaysia has consistently lost money in F1 because their returns have not been enough to cover the billions spent in expenses. Do we need to have such a black hole for financial wastage?